1142142244 has 6 divisors (see below), whose sum is σ = 1998748934. Its totient is φ = 571071120.

The previous prime is 1142142241. The next prime is 1142142247. The reversal of 1142142244 is 4422412411.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1142142241) and next prime (1142142247).

It can be written as a sum of positive squares in only one way, i.e., 1065369600 + 76772644 = 32640^2 + 8762^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1142142241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 142767777 + ... + 142767784.

Almost surely, 2^1142142244 is an apocalyptic number.

It is an amenable number.

1142142244 is a deficient number, since it is larger than the sum of its proper divisors (856606690).

1142142244 is a wasteful number, since it uses less digits than its factorization.

1142142244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285535565 (or 285535563 counting only the distinct ones).

The product of its digits is 2048, while the sum is 25.

The square root of 1142142244 is about 33795.5950384070. The cubic root of 1142142244 is about 1045.2978688882.

Adding to 1142142244 its reverse (4422412411), we get a palindrome (5564554655).

The spelling of 1142142244 in words is "one billion, one hundred forty-two million, one hundred forty-two thousand, two hundred forty-four".